231 lines
5.7 KiB
C
231 lines
5.7 KiB
C
/* WARNING: This file is generated by combine.pl from combine.inc.
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Please edit one of those files rather than this one. */
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#line 1 "pixman-combine.c.template"
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#define COMPONENT_SIZE 16
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#define MASK 0xffffULL
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#define ONE_HALF 0x8000ULL
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#define A_SHIFT 16 * 3
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#define R_SHIFT 16 * 2
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#define G_SHIFT 16
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#define A_MASK 0xffff000000000000ULL
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#define R_MASK 0xffff00000000ULL
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#define G_MASK 0xffff0000ULL
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#define RB_MASK 0xffff0000ffffULL
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#define AG_MASK 0xffff0000ffff0000ULL
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#define RB_ONE_HALF 0x800000008000ULL
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#define RB_MASK_PLUS_ONE 0x10000000010000ULL
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#define ALPHA_16(x) ((x) >> A_SHIFT)
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#define RED_16(x) (((x) >> R_SHIFT) & MASK)
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#define GREEN_16(x) (((x) >> G_SHIFT) & MASK)
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#define BLUE_16(x) ((x) & MASK)
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/*
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* Helper macros.
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*/
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#define MUL_UN16(a, b, t) \
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((t) = (a) * (b) + ONE_HALF, ((((t) >> G_SHIFT ) + (t) ) >> G_SHIFT ))
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#define DIV_UN16(a, b) \
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(((uint32_t) (a) * MASK) / (b))
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#define ADD_UN16(x, y, t) \
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((t) = (x) + (y), \
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(uint64_t) (uint16_t) ((t) | (0 - ((t) >> G_SHIFT))))
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#define DIV_ONE_UN16(x) \
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(((x) + ONE_HALF + (((x) + ONE_HALF) >> G_SHIFT)) >> G_SHIFT)
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/*
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* The methods below use some tricks to be able to do two color
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* components at the same time.
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*/
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/*
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* x_rb = (x_rb * a) / 255
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*/
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#define UN16_rb_MUL_UN16(x, a, t) \
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do \
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{ \
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t = ((x) & RB_MASK) * (a); \
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t += RB_ONE_HALF; \
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x = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
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x &= RB_MASK; \
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} while (0)
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/*
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* x_rb = min (x_rb + y_rb, 255)
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*/
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#define UN16_rb_ADD_UN16_rb(x, y, t) \
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do \
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{ \
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t = ((x) + (y)); \
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t |= RB_MASK_PLUS_ONE - ((t >> G_SHIFT) & RB_MASK); \
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x = (t & RB_MASK); \
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} while (0)
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/*
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* x_rb = (x_rb * a_rb) / 255
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*/
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#define UN16_rb_MUL_UN16_rb(x, a, t) \
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do \
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{ \
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t = (x & MASK) * (a & MASK); \
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t |= (x & R_MASK) * ((a >> R_SHIFT) & MASK); \
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t += RB_ONE_HALF; \
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t = (t + ((t >> G_SHIFT) & RB_MASK)) >> G_SHIFT; \
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x = t & RB_MASK; \
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} while (0)
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/*
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* x_c = (x_c * a) / 255
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*/
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#define UN16x4_MUL_UN16(x, a) \
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do \
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{ \
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uint64_t r1__, r2__, t__; \
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\
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r1__ = (x); \
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UN16_rb_MUL_UN16 (r1__, (a), t__); \
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\
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r2__ = (x) >> G_SHIFT; \
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UN16_rb_MUL_UN16 (r2__, (a), t__); \
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\
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(x) = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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* x_c = (x_c * a) / 255 + y_c
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*/
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#define UN16x4_MUL_UN16_ADD_UN16x4(x, a, y) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x); \
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r2__ = (y) & RB_MASK; \
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UN16_rb_MUL_UN16 (r1__, (a), t__); \
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UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = (x) >> G_SHIFT; \
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r3__ = ((y) >> G_SHIFT) & RB_MASK; \
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UN16_rb_MUL_UN16 (r2__, (a), t__); \
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UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \
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\
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(x) = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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* x_c = (x_c * a + y_c * b) / 255
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*/
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#define UN16x4_MUL_UN16_ADD_UN16x4_MUL_UN16(x, a, y, b) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x); \
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r2__ = (y); \
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UN16_rb_MUL_UN16 (r1__, (a), t__); \
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UN16_rb_MUL_UN16 (r2__, (b), t__); \
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UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = ((x) >> G_SHIFT); \
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r3__ = ((y) >> G_SHIFT); \
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UN16_rb_MUL_UN16 (r2__, (a), t__); \
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UN16_rb_MUL_UN16 (r3__, (b), t__); \
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UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \
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\
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(x) = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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* x_c = (x_c * a_c) / 255
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*/
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#define UN16x4_MUL_UN16x4(x, a) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x); \
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r2__ = (a); \
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UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = (x) >> G_SHIFT; \
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r3__ = (a) >> G_SHIFT; \
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UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \
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\
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(x) = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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* x_c = (x_c * a_c) / 255 + y_c
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*/
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#define UN16x4_MUL_UN16x4_ADD_UN16x4(x, a, y) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x); \
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r2__ = (a); \
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UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \
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r2__ = (y) & RB_MASK; \
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UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = ((x) >> G_SHIFT); \
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r3__ = ((a) >> G_SHIFT); \
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UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \
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r3__ = ((y) >> G_SHIFT) & RB_MASK; \
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UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \
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\
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(x) = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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* x_c = (x_c * a_c + y_c * b) / 255
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*/
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#define UN16x4_MUL_UN16x4_ADD_UN16x4_MUL_UN16(x, a, y, b) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x); \
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r2__ = (a); \
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UN16_rb_MUL_UN16_rb (r1__, r2__, t__); \
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r2__ = (y); \
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UN16_rb_MUL_UN16 (r2__, (b), t__); \
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UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = (x) >> G_SHIFT; \
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r3__ = (a) >> G_SHIFT; \
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UN16_rb_MUL_UN16_rb (r2__, r3__, t__); \
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r3__ = (y) >> G_SHIFT; \
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UN16_rb_MUL_UN16 (r3__, (b), t__); \
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UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \
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\
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x = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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/*
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x_c = min(x_c + y_c, 255)
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*/
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#define UN16x4_ADD_UN16x4(x, y) \
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do \
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{ \
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uint64_t r1__, r2__, r3__, t__; \
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\
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r1__ = (x) & RB_MASK; \
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r2__ = (y) & RB_MASK; \
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UN16_rb_ADD_UN16_rb (r1__, r2__, t__); \
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\
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r2__ = ((x) >> G_SHIFT) & RB_MASK; \
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r3__ = ((y) >> G_SHIFT) & RB_MASK; \
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UN16_rb_ADD_UN16_rb (r2__, r3__, t__); \
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\
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x = r1__ | (r2__ << G_SHIFT); \
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} while (0)
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